CVE-2026-63924 PUBLISHED

ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

Assigner: Linux
Reserved: 19.07.2026 Published: 19.07.2026 Updated: 20.07.2026

In the Linux kernel, the following vulnerability has been resolved:

ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

ipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess things up.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

CVSS 3.1

Vendor	Linux
Product	Linux
Versions	Default: unaffected affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to b3ac54e5c905f86d22b502eacb5686a282c5659f (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 645b99b1a185c91a79bdac4c5de0f91b212d64f0 (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 9e883eaa878f4337b5873c706efb5a192364ed18 (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to bddaa4dfc7f36e1ee343a0622f69288af2b9ace9 (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 72af7beae774e46ed543f3f2f267bf0a141bfcdd (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to c512e1c819dfbf6ae95ee7a44b65b9ad98979157 (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 2b56bbd928c030894c270cd33d60286326919458 (excl.) affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to d47548a36639095939f4747d4c43f2271366f565 (excl.)

Vendor	Linux
Product	Linux
Versions	Default: affected Version 2.6.12 is affected unaffected from 0 to 2.6.12 (excl.) unaffected from 5.10.259 to 5.10.* (incl.) unaffected from 5.15.210 to 5.15.* (incl.) unaffected from 6.1.176 to 6.1.* (incl.) unaffected from 6.6.143 to 6.6.* (incl.) unaffected from 6.12.93 to 6.12.* (incl.) unaffected from 6.18.35 to 6.18.* (incl.) unaffected from 7.0.12 to 7.0.* (incl.) unaffected from 7.1 to * (incl.)